Roll WebRTC from 5cf0ef0022c7 to 29bd8638adb0 (1 revision)

https://webrtc.googlesource.com/src.git/+log/5cf0ef0022c7..29bd8638adb0

2021-01-18 asapersson@webrtc.org Add field trial for allowing cropped resolution when limiting max layers.

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/webrtc-chromium-autoroll
Please CC webrtc-chromium-sheriffs-robots@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Bug: None
Tbr: webrtc-chromium-sheriffs-robots@google.com
Change-Id: I8f5671490cd3e3d71004b256fb3445e990045eae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2636495Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#844637}

DEPS

@@ -1515,7 +1515,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '3c2fe3888658d82b47ca831d59a2e07579619c2d',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '5cf0ef0022c7e044fdfed7c511fe9806a2dd7a68',
+    Var('webrtc_git') + '/src.git' + '@' + '29bd8638adb0a7294f7b8ae589fdd24077539dbb',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),